Is there a name for these?

[saskfinder]

Does anyone else find these notched hammer stones. The notches are generally polished. Some have a lot of impact damage on the ends. However the more polished one has little to no impact damage. Maybe they had other uses. Were they hafted? Thoughts

 

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[The Grim Reaper]

Yes, natural rocks.

Sorry, but not artifacts.

 

[Treasure_Hunter]

Sorry, they are natural rocks.

 

[filmiracl]

Natural.